Home / 158,333.34-218,445.78-90,301.40

Finding the Fourth Proportional to 158,333.34, 218,445.78 and 90,301.40

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Solution

The fourth proportional to 158,333.34, 218,445.78 and 90,301.40 is: 124,585.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    158,333.34 : 218,445.78 = 90,301.40 : x
  2. Step 2: Convert to fraction form
    158,333.34/218,445.78 = 90,301.40/x
  3. Step 3: Cross multiply
    158,333.34x = 218,445.78 × 90,301.40
  4. Step 4: Simplify right side
    158,333.34x = 19,725,959,758.09
  5. Step 5: Solve for x
    x = 19,725,959,758.09/158,333.34
  6. Step 6: Final answer
    x = 124,585.00

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.